文献类型：期刊文献

英文题名：Extracting keratin from chicken feathers by using a hydrophobic ionic liquid

作者：Wang, Yun-Xian[1];Cao, Xue-Jun[1]

机构：[1]E China Univ Sci & Technol, Dept Bioengn, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

年份：2012

卷号：47

期号：5

起止页码：896

外文期刊名：PROCESS BIOCHEMISTRY

收录：;EI(收录号：20121514935233);WOS:【SCI-EXPANDED(收录号:WOS:000303622400030)】；

语种：英文

外文关键词：Ionic liquid; 1-hydroxyethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide; Keratin; Chicken feathers; Separation

摘要：Keratin was extracted from chicken feathers by using a hydrophobic ionic liquid (IL), 1-hydroxyethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide ([HOEMIm][NTf2]). Extracted keratin has good solubility in water while the ionic liquid is immiscible with water, and therefore the extracted keratin could be easily separated from the reaction system by water. The effects of ionic liquid, NaHSO3, reaction temperature and time were investigated and extracting conditions were optimized. The maximum yield of keratin was up to about 21% with mass ratio of feathers to NaHSO(3)1:1 and mass ratio of feathers to ionic liquid 1:40 at 80 degrees C for 4h. Moreover, there was no obvious loss in the yield after ionic liquid was reused for five batches under optimized conditions. In addition, the recovery of ionic liquid was about 95% each time. The results indicated that [HOEMIm][NTf2] was very efficient as catalyst and solvent for dissolving feathers and could be easily recovered due to its hydrophobicity. (C) 2012 Elsevier Ltd. All rights reserved.